react-native/packages/react-native-codegen/src/CodegenSchema.js

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow strict
 * @format
 */

'use strict';

export type PlatformType = 'iOS' | 'android';

export type SchemaType = $ReadOnly<{|
  modules: $ReadOnly<{|
    [hasteModuleName: string]: ComponentSchema | NativeModuleSchema,
  |}>,
|}>;

/**
 * Component Type Annotations
 */
export type DoubleTypeAnnotation = $ReadOnly<{|
  type: 'DoubleTypeAnnotation',
|}>;

export type FloatTypeAnnotation = $ReadOnly<{|
  type: 'FloatTypeAnnotation',
|}>;

export type BooleanTypeAnnotation = $ReadOnly<{|
  type: 'BooleanTypeAnnotation',
|}>;

export type Int32TypeAnnotation = $ReadOnly<{|
  type: 'Int32TypeAnnotation',
|}>;

export type StringTypeAnnotation = $ReadOnly<{|
  type: 'StringTypeAnnotation',
|}>;

export type StringEnumTypeAnnotation = $ReadOnly<{|
  type: 'StringEnumTypeAnnotation',
  options: $ReadOnlyArray<{|
    name: string,
  |}>,
|}>;

type ObjectTypeAnnotation<+T> = $ReadOnly<{|
  type: 'ObjectTypeAnnotation',
  properties: $ReadOnlyArray<NamedShape<T>>,
|}>;

export type NamedShape<+T> = $ReadOnly<{
  name: string,
  optional: boolean,
  typeAnnotation: T,
}>;

export type ComponentSchema = $ReadOnly<{|
  type: 'Component',
  components: $ReadOnly<{|
    [componentName: string]: ComponentShape,
  |}>,
|}>;

export type ComponentShape = $ReadOnly<{|
  ...OptionsShape,
  extendsProps: $ReadOnlyArray<ExtendsPropsShape>,
  events: $ReadOnlyArray<EventTypeShape>,
  props: $ReadOnlyArray<NamedShape<PropTypeAnnotation>>,
  commands: $ReadOnlyArray<NamedShape<CommandTypeAnnotation>>,
|}>;

export type OptionsShape = $ReadOnly<{|
  interfaceOnly?: boolean,

  // Use for components with no current paper rename in progress
  // Does not check for new name
  paperComponentName?: string,

  // Use for components that are not used on other platforms.
  excludedPlatforms?: $ReadOnlyArray<PlatformType>,

  // Use for components currently being renamed in paper
  // Will use new name if it is available and fallback to this name
  paperComponentNameDeprecated?: string,
|}>;

export type ExtendsPropsShape = $ReadOnly<{|
  type: 'ReactNativeBuiltInType',
  knownTypeName: 'ReactNativeCoreViewProps',
|}>;

export type EventTypeShape = $ReadOnly<{|
  name: string,
  bubblingType: 'direct' | 'bubble',
  optional: boolean,
  paperTopLevelNameDeprecated?: string,
  typeAnnotation: $ReadOnly<{|
    type: 'EventTypeAnnotation',
    argument?: ObjectTypeAnnotation<EventTypeAnnotation>,
  |}>,
|}>;

export type EventTypeAnnotation =
  | BooleanTypeAnnotation
  | StringTypeAnnotation
  | DoubleTypeAnnotation
  | FloatTypeAnnotation
  | Int32TypeAnnotation
  | StringEnumTypeAnnotation
  | ObjectTypeAnnotation<EventTypeAnnotation>;

export type PropTypeAnnotation =
  | $ReadOnly<{|
      type: 'BooleanTypeAnnotation',
      default: boolean | null,
    |}>
  | $ReadOnly<{|
      type: 'StringTypeAnnotation',
      default: string | null,
    |}>
  | $ReadOnly<{|
      type: 'DoubleTypeAnnotation',
      default: number,
    |}>
  | $ReadOnly<{|
      type: 'FloatTypeAnnotation',
      default: number | null,
    |}>
  | $ReadOnly<{|
      type: 'Int32TypeAnnotation',
      default: number,
    |}>
  | $ReadOnly<{|
      type: 'StringEnumTypeAnnotation',
      default: string,
      options: $ReadOnlyArray<{|
        name: string,
      |}>,
    |}>
  | $ReadOnly<{|
      type: 'Int32EnumTypeAnnotation',
      default: number,
      options: $ReadOnlyArray<{|
        value: number,
      |}>,
    |}>
  | $ReadOnly<{|
      type: 'ReservedPropTypeAnnotation',
      name:
        | 'ColorPrimitive'
        | 'ImageSourcePrimitive'
        | 'PointPrimitive'
        | 'EdgeInsetsPrimitive',
    |}>
  | ObjectTypeAnnotation<PropTypeAnnotation>
  | $ReadOnly<{|
      type: 'ArrayTypeAnnotation',
      elementType:
        | BooleanTypeAnnotation
        | StringTypeAnnotation
        | DoubleTypeAnnotation
        | FloatTypeAnnotation
        | Int32TypeAnnotation
        | $ReadOnly<{|
            type: 'StringEnumTypeAnnotation',
            default: string,
            options: $ReadOnlyArray<{|
              name: string,
            |}>,
          |}>
        | ObjectTypeAnnotation<PropTypeAnnotation>
        | $ReadOnly<{|
            type: 'ReservedPropTypeAnnotation',
            name:
              | 'ColorPrimitive'
              | 'ImageSourcePrimitive'
              | 'PointPrimitive'
              | 'EdgeInsetsPrimitive',
          |}>
        | $ReadOnly<{|
            type: 'ArrayTypeAnnotation',
            elementType: ObjectTypeAnnotation<PropTypeAnnotation>,
          |}>,
    |}>;

export type CommandTypeAnnotation = $ReadOnly<{|
  type: 'FunctionTypeAnnotation',
  params: $ReadOnlyArray<CommandFunctionTypeParamAnnotation>,
|}>;

// TODO: Unify this function type annotation with NativeModule schema
export type CommandFunctionTypeParamAnnotation = $ReadOnly<{|
  name: string,
  typeAnnotation: CommandParamTypeAnnotation,
|}>;

type CommandParamTypeAnnotation =
  | ReservedTypeAnnotation
  | BooleanTypeAnnotation
  | Int32TypeAnnotation
  | DoubleTypeAnnotation
  | FloatTypeAnnotation
  | StringTypeAnnotation;

export type ReservedTypeAnnotation = $ReadOnly<{|
  type: 'ReservedTypeAnnotation',
  name: 'RootTag', // Union with more custom types.
|}>;

/**
 * NativeModule Types
 */
export type Nullable<+T: NativeModuleTypeAnnotation> =
  | NullableTypeAnnotation<T>
  | T;

export type NullableTypeAnnotation<
  +T: NativeModuleTypeAnnotation,
> = $ReadOnly<{|
  type: 'NullableTypeAnnotation',
  typeAnnotation: T,
|}>;

export type NativeModuleSchema = $ReadOnly<{|
  type: 'NativeModule',
  aliases: NativeModuleAliasMap,
  spec: NativeModuleSpec,
  moduleNames: $ReadOnlyArray<string>,
  // Use for modules that are not used on other platforms.
  // TODO: It's clearer to define `restrictedToPlatforms` instead, but
  // `excludedPlatforms` is used here to be consistent with ComponentSchema.
  excludedPlatforms?: $ReadOnlyArray<PlatformType>,
|}>;

type NativeModuleSpec = $ReadOnly<{|
  properties: $ReadOnlyArray<NativeModulePropertySchema>,
|}>;

export type NativeModulePropertySchema = NamedShape<
  Nullable<NativeModuleFunctionTypeAnnotation>,
>;

export type NativeModuleAliasMap = $ReadOnly<{|
  [aliasName: string]: NativeModuleObjectTypeAnnotation,
|}>;

export type NativeModuleFunctionTypeAnnotation = $ReadOnly<{|
  type: 'FunctionTypeAnnotation',
  params: $ReadOnlyArray<NamedShape<Nullable<NativeModuleParamTypeAnnotation>>>,
  returnTypeAnnotation: Nullable<NativeModuleReturnTypeAnnotation>,
|}>;

export type NativeModuleObjectTypeAnnotation = ObjectTypeAnnotation<
  Nullable<NativeModuleBaseTypeAnnotation>,
>;

export type NativeModuleArrayTypeAnnotation<
  +T: Nullable<NativeModuleBaseTypeAnnotation>,
> = $ReadOnly<{|
  type: 'ArrayTypeAnnotation',
  /**
   * TODO(T72031674): Migrate all our NativeModule specs to not use
   * invalid Array ElementTypes. Then, make the elementType required.
   */
  elementType?: T,
|}>;

export type NativeModuleStringTypeAnnotation = $ReadOnly<{|
  type: 'StringTypeAnnotation',
|}>;

export type NativeModuleNumberTypeAnnotation = $ReadOnly<{|
  type: 'NumberTypeAnnotation',
|}>;

export type NativeModuleInt32TypeAnnotation = $ReadOnly<{|
  type: 'Int32TypeAnnotation',
|}>;

export type NativeModuleDoubleTypeAnnotation = $ReadOnly<{|
  type: 'DoubleTypeAnnotation',
|}>;

export type NativeModuleFloatTypeAnnotation = $ReadOnly<{|
  type: 'FloatTypeAnnotation',
|}>;

export type NativeModuleBooleanTypeAnnotation = $ReadOnly<{|
  type: 'BooleanTypeAnnotation',
|}>;

export type NativeModuleGenericObjectTypeAnnotation = $ReadOnly<{|
  type: 'GenericObjectTypeAnnotation',
|}>;

export type NativeModuleTypeAliasTypeAnnotation = $ReadOnly<{|
  type: 'TypeAliasTypeAnnotation',
  name: string,
|}>;

export type NativeModulePromiseTypeAnnotation = $ReadOnly<{|
  type: 'PromiseTypeAnnotation',
|}>;

export type NativeModuleVoidTypeAnnotation = $ReadOnly<{|
  type: 'VoidTypeAnnotation',
|}>;

export type NativeModuleBaseTypeAnnotation =
  | NativeModuleStringTypeAnnotation
  | NativeModuleNumberTypeAnnotation
  | NativeModuleInt32TypeAnnotation
  | NativeModuleDoubleTypeAnnotation
  | NativeModuleFloatTypeAnnotation
  | NativeModuleBooleanTypeAnnotation
  | NativeModuleGenericObjectTypeAnnotation
  | ReservedTypeAnnotation
  | NativeModuleTypeAliasTypeAnnotation
  | NativeModuleArrayTypeAnnotation<Nullable<NativeModuleBaseTypeAnnotation>>
  | NativeModuleObjectTypeAnnotation;

export type NativeModuleParamTypeAnnotation =
  | NativeModuleBaseTypeAnnotation
  | NativeModuleParamOnlyTypeAnnotation;

export type NativeModuleReturnTypeAnnotation =
  | NativeModuleBaseTypeAnnotation
  | NativeModuleReturnOnlyTypeAnnotation;

export type NativeModuleTypeAnnotation =
  | NativeModuleBaseTypeAnnotation
  | NativeModuleParamOnlyTypeAnnotation
  | NativeModuleReturnOnlyTypeAnnotation;

type NativeModuleParamOnlyTypeAnnotation = NativeModuleFunctionTypeAnnotation;
type NativeModuleReturnOnlyTypeAnnotation =
  | NativeModulePromiseTypeAnnotation
  | NativeModuleVoidTypeAnnotation;